Which of the following poses the most immediate threat to pollinators? A. inadequate habitat
B. runoff of polluted water
C. lack of cover crops
D. using chemicals to control pests

Using Chemicals to control pests

Explanation:

In the reading where this question was posed, it states,

" So rather than using chemicals on crops, we may choose to use organic and sustainable growing methods that help the system work together in balance. "

Which does not come straight out and tell you the answer, but you have to infer that it is the correct answer.

Also I got it correct so I know it is the right answer!